<script lang="ts" setup name="HomeBrand">
import HomePanel from './home-panel.vue'
import useStore from '@/store';
import {useLazyData } from '@/utils/hooks'
import { ref } from 'vue';
const {home } = useStore()
const target = useLazyData(home.getBrandList)
const active = ref(0)
// 左箭头
const prev = ()=>{
  if(active.value===0)return
  active.value--
}
// 右箭头
const next  = ()=>{ 
  if(Math.ceil(home.brandList.length/5-1)===active.value) return
  active.value++
}
</script>

<template>
  <HomePanel ref="target" title="热门品牌" sub-title="国际经典 品质保证">
    <template v-slot:right>
      <a href="javascript:;" :class="{disabled:active===0}" class="iconfont icon-angle-left prev" @click="prev"></a>
      <a href="javascript:;" :class="{disabled:active===Math.ceil(home.brandList.length/5-1)}" class="iconfont icon-angle-right next" @click="next"></a>
    </template>
    <div class="box" ref="box">
      <ul class="list" 
      :style="
      {
        transform:`translateX(${active*-1240}px)`,
        width:`${Math.ceil(home.brandList.length/5)*100 + '%'}`
      }" >
        <li v-for="item in home.brandList" :key="item.id">
          <RouterLink to="/">
            <img
              :src="item.picture"
              alt=""
            />
          </RouterLink>
        </li>
      </ul>
    </div>
  </HomePanel>
</template>

<style scoped lang="less">
.home-panel {
  background: #f5f5f5;
}
.iconfont {
  width: 20px;
  height: 20px;
  background: #ccc;
  color: #fff;
  display: inline-block;
  text-align: center;
  margin-left: 5px;
  background: @xtxColor;
  &::before {
    font-size: 12px;
    position: relative;
    top: -2px;
  }
  &.disabled {
    background: #ccc;
    cursor: not-allowed;
  }
}
.box {
  display: flex;
  width: 100%;
  height: 345px;
  overflow: hidden;
  padding-bottom: 40px;
  .list {
    width: 200%;
    display: flex;
    transition: all 1s;
    li {
      margin-right: 10px;
      width: 240px;
      &:nth-child(5n) {
        margin-right: 0;
      }
      img {
        width: 240px;
        height: 305px;
      }
    }
  }
}
</style>